About Lester B. Pearson Lester B. Pearson (1897–1972) was Canada’s fourteenth prime minister. Books by Lester B. Pearson Prime Ministers of Canada: Lester B. Pearson by (author) Lester B. Pearson Words & Occasions by (author) Lester B. Pearson Words & Occasions by (author) Lester B. Pearson